Support and brake for bobbins of spinning machines



I 1 630,610 May 1927' H. DEPPERMANN SUPPORT AND BRAKE FOR BOBBINS OF SPINNING IACHINES Filed Sept. 22, 1.9 25

//e/-ma m De erma-hw g His Am /my Patented May 31 1927. UNITED arent one! on.

HERMANNDEPPER1\lIANN, onnownwns, :NEAR POTSIDAM, GERMANY:

SUPPORT AND, BRAKE FORaBOBBINS OF- SPINNING ,MACHINES;

Application filed September 22, 1925, Serial No. 57,818, and in Germany September27, 1924.

This invention relates; to, spinninguna the spindles at a constantly varying and uncliines of the type wherein rotatableflyers controllable speed, with the resultthat in are operative to spin the-fibre into yarn and either case a sudden and jerky frictional re-i said tlyers arranged in relationzto the spools" sistance is produced and a sudden slack and 60 5 to lay the yarnthereon as itis spun and the kink in the spun yarn producedw To oveia bobbins adapted to'be rotated through-the come thisdisadvantagerotatable metal tubes pull thereon by the yarn tocompensate for are secured tothe bobbins and located be.-- the dii'i'erence in the rate-at which the yarn tween the-latter'fand-the spindle. However; is spun and the rotationpof-the -flyer about by-this arrangement a tensile strain gmust- 65 the bobbin, means being provided to yield -v be exertedupoi1 the yarn-in the course of ingly retard the rotation of the bobbin by spinning to move thebobbin HIId lZlIQ fCHbB tO the pull of theyarn, and-it is the object of overcome the frictional resistance; between the presentv invention to provide an-im the stationary supportingspindle and tube proved construction and arrangement of by suchmovement- This frictionalfresist 70 i5 bobbin support and mounting"therefor and ancei forceis by no means slight as it is not to drag or brake mechanism to yieldingly' possible to-providea free andeasyrunning retard the movement of the bobbin support bearing orsupport for the bob-binonthe sta-- and whereby to maintain adragging or re-: and any drag force exerted onthewheel by tarding eli'ect upon the bobbin of a constant. It is'therefore not feasible topla'ce the yarn 75 predetermined force proportional with the under a suflicientlyeasy and uniformyieldtensile strength of the yarn. ing tension by means of the, drag, since theln carrying out the invention the'spindle frictional resistance produced betwee11,,the upon whichthe bobbinis engaged is mountfaces ofthe bobbin or the tube and ofthe ed to have free and easy rotation in a lifter, spindle is considerable; however lavish the 80 andvfiyer frame, preferably in. a ball beara lubrication may be.

ing, with the spindle extending. from one This frictional resistance force totheroside of said frame for engagement of the tatlon of the bobbin by the pull on the? yarn bobbin thereon and being provided with tends tobreakthe yarn,withtheresult that means taco-operate with the bobbin/t0 posiyarn. beyond a certain degree of fineness can- 30 tively couple the bobbin to the spindle to ronot be spun 'on'machines of this kind, or at tate therewith. The lifter frameis in the least the spinning of such yarnis accomform of a box and the spindleisarranged pa nied with great difiiculti'es and'waste; fine so that an end portion thereofextends beyarn; or-loosely"twisted yarn, oryarir-made yond its bearinginto the frame andqhas a of inferiormaterial"cannot st-andthe" sud- 90 friction wheel or disk fixed thereto, saiddisk den tensile strain" of the pull'thereon and being in the nature of a brake drum for the; isbroken; frictional" engagement l of means arranged Thegpresent invention is designed to overwiti'iin the frame to retard and exert a drag, come this disadvantage by providing the ging orretarding force thereon and thereby following; arrangement. 1 The spindle. is 95 40 on the spindle, said means being adjustable mounted in ball bearings on the lifter of fly; from the exterior of the frame tojvary said frame and is freelyandgeasily rotatable,and dragging force, and the drag or brake mechthe bobbin engaged upon the spindle is'posi-. anism being enclosed in'the frame thereby tively-coupled tothe spindle by simple preventing the accumulation of foreignsub-' means, such asia catch spring. Further-z 1 stances thereon, such as lint thrown off'from more, the I brake pulley or similar braking the fibre being spun, and interfering with? means is mountedon the lower end ofothe the proper functioning of said mechanism. spindlefwitho-ut any additional support or,

In known constructions of spinning mas bearing, to rotate therewith. The spindle chines arranged with active flyers having and itsaccessories therefore bear uniformly 105 downwardly extending arms and witlrdead on the ball bearings and the rotation thereof spindles, the bobbins are usually loosely maygbe brakedorretardedwithjaneasy and placed upon the spindles,whetherthe lifter predetermined "force with the. result that frame is of the rotatably supported or linthe tension on theyarn is easy, yielding and early displacedform. The spindles are fixed uniform to a degree which wasnot hereto 110 upon the frame or are rotatably mounted fore attainable.

thereon, and the bobbins are rotatable on The pulleyor brake disk may be'made of and enlarged even after service of several years. A further advantage of the invention is that chattering and vibration of the bobbins and of the. spindle is eliminated. llIOl'GOVGlQlClIG entire braking mechanism is protected from dust and dirt and so to speak invisible.

Two embodiments of the invention. are illustrated in the accompanying drawings as appliedio a rotatably mounted lifter. and flyer frame arranged with only a pair of bobbin carrying spindles and plates therefor, and the shaft is rotatable through an arc of onehundred and eighty degrees for removing thebobbins from the spindles and engag ing bobbins thereon, instead of embodying a plurality of bobbin carrying spindles and rotatable through an arc of ninety degrees as is usual. .While the lifter-frame is described and illustrated as arranged with a pair of bobbins it will be obvious that the invention is applicable to spinning machines embodying a rotatably mounted lifter frame arranged with a )lurality of pairs of bobbin carrying spin les.

Fig. 1 is a part sectional elevation of one form of my invention.

Fig. 2 is a part sectionalelevation ofa modification.

In the en'ibodiment of the invention illustrated in Figure 1 the lifter or fly frame 7 is of box form mounted on a shaft 1 the axis of which is disposed in the plane of and, intersects the axes of the spindles and flyer. The shaft with the frame is vertically reciprocatory to the extent of the length of the bobbin in the usual manner by lift rods 2. The activeflyer 3 maybe arraugediu any desired position and is driven from a suite able source of power by a cord passing around pulley 4. Spindles. 5 supporting a bobbin 6 on which the spun yarn is to be laid and on the other of which spindles the bobbin containing the roving, as 6", to be drawn out and spun is engaged, areinounted in opposite walls of the lifter or fly frame to have free and easy rotation, an antifriction bearing suchas a ball bearing 8 preferably being used for this purpose,

The bobbins .6 are positively coupled to the rotatable spindles by a resilient member 9 of spring wire arranged with a catch 11 normally urged laterally of the spindle and adapted to engage a small recess 10 cut, in the end of the boreof the bobbin and functionin to hold the bobbin against longitudintil movement on the spindle. While the catch 11 also serves to positively couple the spools to the spindles whereby the spools and spindles rotate in unison, a further means is provided to positively couple the spools and spindles together, and comprises eral friction groove 13 has screw tlni'eacled connectionwith the lower end of the spindle 5 extending through the ball bearing into the lifter and thy frame, said pulley groove being frictionally engaged by a drag cord let yieldingly connected to the frame by a spring, as at 15, whereby the tension of the drag cord is adapted to be varied, the cord being passedthrough the eye of a member 16. fixed in the frame. Any other drag or brake means may be used in place of said cord. By this arrangementayery accm'ate adjustn'ient of the drag of the cord upon the wheel may be effected so that the resisting force to the tensile stress on the ya rnwill be of predetermined uniform degree, yielding andeasy. \Vhether set for coarse or line yarn the tension will thus remain the same with the consequence that no further setting is necessary during the spiuniugoperation. The entire drag or brake meehau sin isnlounted withinthe lifter frame and is protectedfrom foreign substances. such as dust. water or the lint thrown oil from the l'iln'e as. it is spun. An imptu'taut feature of this invention is that the ln'aking mechanism is disposedrlose to the mounting ofthe spin d lo and auydrag fort-e eru-rtri'l on the whet-d by the drag is transmitted to the spindle beau ing with the result thalrwear. of the drag mechanism or the otherparts is reduced to a n'iinimun'i. In, view of the fact that the liobbi 'r is not arranged as the drag pulley the bobbin may be provided at both ends with f] at, outwardlyfround llan gee and their-c by the cost of manufacture of the bobbins reduced. i i

To remove or engage bobbins upon the spindles the fly frame is rotated onthe aids of the shaft 1 in the usual manner. After an empty bobbin has been engaged upon the spindleso as to come within the reach of the armssofa flyer a few turns of the yarn is wound uponfthe bobbins by the revolving of the flyer afterwhich the yarn lu'okcu. To guide the roving from the spool 6 to the iiyer 3 guide rolls 17 are mounted upon rods 17 journaled'by means of ball bearings upon the lifter fralneover which the roving is engaged.

In the embodiment of the invention illus trated in Figure 2 the shaft 1 instead of being positioned in the plane of and intersect- H ll has

lltl

ing the axes of the spindles, it is mounted forwardly or laterally of the flyer and the lifter frame is in the form of a pair of plates fixed to and extending oppositely in the same plane from said shaft. The bobbin carrying spindles are mounted on said plates to extend from opposite sides. This construction of lifter frame is cheaper to manufacture but its operation is in all respects like that of the Figure 1 construction' To protect the drag or brake mechanism from the accumulation of foreign substances thereon plates 18 are fixed upon the connection of the lifter plates with the shaft 1 to extend in parallel relation to the lifter plates.

Experiments have shown that for example jute yarn No. 6 Engl. could be spun without difficulty with the ordinary low degree of twist 1.1 with the fiyers revolving at about five thousand revolutions per minute.

This result was heretofore thought to be impossible because there were no means of producing the soft and resilient drag afforded by the present invention.

lVhat I claim is z- 1. In a spinning machine, a lifter frame, a spindle having a floating l earing in said frame, one end of said spindle projecting from one side of the frame for engagement of a bobbin thereon .and arranged with means for positively coupling and releasably holding a bobbin on the spindle, and a friction wheel constituting one member of a brake mechanism to retard the rotation of the spindle fixed to the spindle at the opposite side of the lifter frame in proximity to the bearing of the spindle in the lifter frame.

2. In a spinning machine as claimed in claim 1, adjustable means to frictionally and yieldingly engage the wheel to retard the rotation of the spindle.

3. A spinning machine as claimed in claim 1, wherein the means to couple and releasably holdthe bobbin on the spindle comprises a yiel-dable member of resilient wire mounted on the spindle arranged with a catch at one end of the spindle normally urged laterally thereof for engagement ina recess in the wall of the bore of the bobbin engaged upon the spindle.

4t. A spinning machine as claimed in claim 1, wherein the bearing of the spindle in the lifter frame comprises a ball bearing, means to frictionally engage the wheel to retard the rotation of the spindle, and the wheel is arranged with a part overhanging the ball bearing whereby the stress of the force of the friction means engaging the wheel will be taken up in the spindle bearing.

5. In a spinning machine as claimed in claim 1, means to frictionally engage the wheel to retard the rotation of the spindle, and the lifter frame is in the form of a housing" enclosing the friction wheel and the means engaging therewith to protect the same from the accumulation of foreign substances thereon.

6. In a spinning machine, a lifter frame comprising a pair of plates mounted on a shaft whose axis is in a. plane transverse to the axis of a flyer, a spindle rotatably mounted in each plate, one spindle to extend laterally from the side of one plate and the other spindle to extend laterally from the opposite side of the other plate, friction wheels fixed to said spindles at the sides of the plates opposite to that from whichthe spindles project, and means carried by the plates to frictionally engage the wheels to re-' tard the rotation of the spindles.

7. In a spinning machine as claimed in claim 6, means carried by the spindles to cooperate with a bobbin engaged on the spindles to positively couple the bobbins with the spindles to rotate in unison therewith and releasably hold the bobbins upon the spindles.

8. A spinning machine as claimed in claim 6, wherein the lifter frame is .adapted to be moved about the axis of the shaft and have reciprocatory movement transverse to the axis of the shaft and in a direction longitudinally of the flyer.

9. In a spinning machine as claimed in claim 6, means carried by the spindles to positively couple the bobbins engaged upon the spindles wit-l1 the spindles, and the lifter frame is normally positioned with one spindle in axial alinement with the flyer and the bobbin thereon adapted to take up the spun yarn, and the other spindle having a roving carrying bobbin engaged thereon, and means carried by the frame to guide the roving from the one bobbin to the flyer.

10. In a spinning machine as claimed in claim 1, means to frictionally and yieldingly engage the wheel to retard the rotation of the spindle, comprising a cord, a spring attached to a fixed part of the frame, and to which the cord is attached, and a member fixed to the frame having an eye through which the cord is passed.

In testimony whereof I aflix my signature.

HERMANN DEPPEBMANN. 

